Grinding-machine.



K. KRUG.

GRINDING MACHINE.

APPLICATION TILED JAN. n. 1914.

3L 1 @2,34M; Patented July 7, 1914.

KARL KRUG, 0F FECHENHEIM, FRANKFORT-ON-THE-MAIN, GERMANY.

GRINDIN G-MACHINE.

Specification of Letters Patent.

Patented July 7, 1914.

Application filed January 8, 1914. Serial No. 811,040.

To all whom it may concern Be it known that I, KARL Knoo, a subject ofthe Emperor of Germany, and resident of Fechenheim, Frankfort on theMain Germany, have invented a certain new and useful Improvement inGrinding-Machines, of which the following is a specification.

This invention relates to a grinding machine with separate supports forthe work and the grinding means.

In accordance with the invention provision is made for relativeadjustment of the supports by means of tension or adjusting deviceswhich are interposed between the supports and by adjustment of which ahen ing moment in a vertical plane or a torsional moment in a horizontalplane may be set up in the work support or each work support so as toalter the position of the upper end of thework support or each worksupport in relation to t e support for the grinding means.

In the accompanying drawing Figure 1 is a side elevation of a grindingmachine embodying the invention; Fig. 2 is a front elevation thereof;Fig. 3 a section on the line AB of Fig. 1; and Figs. 4 and 5 show, indetail, the means for the relative adjustment of the work and grindingspindle supports, on a larger scale.

As shown, the spindle d on the free ends of which are secured the facegrinding disks e, is horizontally journaled in a snipport or frame awhich is secured on a foun ation on which latter adjacent to said framea are mounted so arate work supports 12 carrying the adjusta 1e "worktables f which are as usual equippedmith T-slots for the purpose ofsecurin the work. Each work-support b is provi ed adjacent to its lowerend with a projection b presenting a plane face oposed to a plane faceon an adjoining proection a on the frame a.

, tions 0. and b are connected by means ,of fastening screws 9 (Fig. 2).

Each of the projections a and b is rovided with a lug m or m at itsupper on and a lateral lug 0 or 0 Threade into corresponding lugs areadjusting screws 11 and k by adjustment of which the supports 6 for thework The proj ectables f may be adjusted relatively to the frame a.

It is clear that by the adjustment of the screw 11 after loosening thetwo upper fastening screws 9 on the same side of the frame a, aninclination will be imparted to the corresponding work support 6 and thework table f will thereby be caused to approach or recede from theadjacent grinding disk 0 according to the direction of inclination; thelocation of the work table in relation to the horizontal plane beingsimultaneously altered. By adjustment of the tension screw k a torsionalmoment is imparted to the support'b, the work table 7 thus receiving arotary movement in its own plane, whereby the relationship of the edgeof the table f adjacent to the grinding disk and the face of said diskis altered. The work table may thus be adjusted not only in the verticalplane including the spindle d but also in a substantially horizontalplane parallel to said spindle. This result is attributable partly tothe arrangement of the work tables upon supports which are independentof the support for the grinding disks but mainly to the employment ofthe support for the grindin disks as an abutment for forces set up to cact the desired adjustments by deflection of the work supports. With thedescribed arrangement the stresses received by the frame a and thevibrations of the grinding disk are largely prevented from reaching thework tables ,1 and thus an increase of precision in the grindingoperations is attained.

What I claim is 1. In a grinding machine the combination with separatesupports for the work and for the grindin means, of devices inter osedbetween sai sup orts, said devices eing adjustable one independent ofthe other to produce deflection and torsion of the worksupport.

2. In a grinding machine the combination of separate juxta osed supportsfor the work and the grin ing means, the adjacent faces of saidsupportshaving projections each formed with a pair of internallythreaded lugs, the lugs of one pair registering with the lugs of theother air, and screws In testimony whereof I have signee my having rightand left hen threads in'enname to this specifiewtion' in the presence ofgagement with said lugs, one set of said lugs two subscribing witnesses.and corresponding screw adapted to Pro- KARL KRUG. duce deflection andthe other see with cor- Witnesses: respending screw edepted'to producetoe ANNA. KOLIB, sion of the work support. JEAN GRUND.

